I have not modified my DX-60 for the ptt mod. I just don't understand how I can zero beat my VFO. It is the classic DX-10, HR-10 and VFO. My vfo does not put out a strong spot tune. Any thoughts out there? BTW, thanks for your answers on antennas and stuff for the it was very clear and I appreciate the time everyone put into it. 73, Alan